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# Internal Resistance

## The voltage provided by a battery is less than the label says due to the parts of the battery charge must flow through.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.
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## Internal Resistance

by CK-12 //at grade

Students will learn the difference between Emf and Voltage (i.e. ideal voltage and the output voltage) and how to calculate the internal resistance of a battery.

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• Video

## Internal Resistance

by CK-12 //at grade

Internal resistance of a battery is demonstrated, explained, and calculated.

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• Practice
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## Internal Resistance Practice

by CK-12 //at grade
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• Downloadable Quiz

## Internal Resistance Quiz - PPB

by CK-12 //at grade

Every battery has some internal resistance; in this quiz students calculate that internal resistance as a small resistor in series, and the voltage drop associated with it.

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• Critical Thinking

## Internal Resistance Discussion Questions

by CK-12 //at grade

A list of student-submitted discussion questions for Internal Resistance.

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• Study Guide

## Electrical Systems Study Guide

by CK-12 //at grade

This study guide is an overview of circuits and circuit diagrams. It discusses voltage, current, Ohm's law, loop rule, and junction rule and reviews how to solve resistors in series, resistors in parallel, capacitors in series, and capacitors in parallel.

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